MPM event was picking up the headers but not linking with libserf, causing
unresolved symbol errors.

Now build MPM event with or without serf support depending on --with-serf
being specified or not.


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performance on SMP systems.


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ap_log_cerror/ap_log_rerror. This fixes per-dir loglevel configuration
for loglevels > notice.


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be more safe on different platforms.

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  be more safe on different platforms.

Pointed out by: rjung


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  be more safe on different platforms.

Pointed out by: rjung


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gcc complains when using -pedantic.

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init functions for connection filters (doing an "init" once per
handler invocation makes no sense for a connection filter).  No longer 
run init functions multiple times per request if a subrequest is used.

* include/util_filter.h (ap_filter_rec_t): Clarify use of the init
  function pointer.

* server/config.c (invoke_filter_init): Drop ap_ prefix for private
  function; take a request_rec pointer and only invoke filters with
  matching request.
  (ap_invoke_handler): Adjust accordingly.

PR: 49328
Reviewed by: rpluem


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APLOG_MAX_LOGLEVEL defined.

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for an exploit.

Some mod_lua fan aught to revisit this and provide a sensible
implementation.

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  subrequest, preserve any filters in the output filter chain which
  were not specific to the subrequest across the redirect (where
  f->r does not point to the subreq's request_rec).

PR: 17629




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Response if they so choose to do so. Previously an attempt to cache a 206
was arbitrarily allowed if the response contained an Expires or
Cache-Control header, and arbitrarily denied if both headers were missing.


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Both AP_MPMQ_STATIC and AP_MPMQ_DYNAMIC mean threaded.


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It causes build problems on Windows and the ap_log* calls in main.c
don't profit from it anyway, because there is no server_rec yet where
they could look up core_module's loglevel.


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Only log the tid, if the MPM is threaded.

Suggested by jorton.

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Without this patch apxs doesn't recognize we have DSO support.

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additions and ap_recent_ctime_ex().

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The new function ap_recent_ctime_ex allows for
optional formatting hints. It checks the provided buffer
length and returns the number of consumed bytes. This is necessary,
because when using options, the length of the formatted time string
is no longer constant.

The only option implemented currently is the addition of microsecond
fractions to the timestamp.

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to the error log.

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- Building modules as DSOs and the "most" module set by default.
  r952007, r952008, r952009
- Fixing VPATH build when using included APR.
  r951769, r951769
- Fixing mod_session_crypto build for APR 2 and VPATH
  r951766
- Fixing mod_session_crypto API incompatibility with APR 2
  r951870

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